Beater-roll raiser



8 19 Jan 1 27 H. c. CLAFLIN BEATER ROLL RAISER Filed March 1924 s Sheets-Sheet 1 Jan. 18, 1927.

H. C. CLAFLIN BEATER ROLL RAI SER Filed March 1924 3 Sheets-Sheet 2 Jan. 18, 1927. 1.614326 H. c. CLAFLIN BEATER ROLL KAISER Filed March 1924 3 Sheets-Sheet 5 Zwn . H hm m (LZa I haven 30:"

Harry j.

Patented Jan. 18, 1927.

UNITED STATES HARRY C. CLAJELIN, 0F BENN INGTON, NEW HAMPSHIRE.

BEATER-ROLL KAISER.

Application filed March 3, '1924. Serial No. 696,525.

My invention relates to heaters for use in making paper pulp, and is more particularly concerned with the mechanism for raising and lowering the beater rolls.

My invention will be best understood from the following description when read in light of the accompanying drawings of one specific embodiment of my invention selected for illustrative purposes, while the scope of my invention will be more particularly pointed out in the appended claims.

In the drawings Fig. 1 is a plan-view of a heater with parts broken away;

Fig. 2 is a side elevation of the beater constructed according to Fig. 1;

Fig. 3 is a plan view of part of the gear shifting mechanism; and

Fig. 4 is a section on the line 1- of Fig. 3.

Referring to thedrawings I have shown a tub 1 in which is positioned the rotary beater roll 3, the beater roll including a shaft 5 which carries a driving pulley 7. For sup porting the beater roll the shaft at opposite ends is journalled in bearings 9 carried at an intermediate portion of the lighter bars 11, the lighter bars being supported by the side members 13 of a supporting frame.

In order that the beater roll may be raised and lowered so as to adjust its position relatively tothe bed plate 15 each lighter bar at .one end is provided with a suitable fulcrum 17, and at its other end is attached to the frame by means of a screw 19, which screw passes through a rotatable nut 21 and at its lower end is pivotally or otherwise suitably secured, as is indicated at 23, to the lighter bar. The nuts 23, which are held against longitudinal movement, when rotated will either raise or lower the screw 19 depending upon the direction of rotation, and consequently will raise or lower the lighter bars.

As illustrated by Figs. 1 and 2 each nut 21 is mounted in a casing 25 carried by side -members 13 of the frame, and on their periphery are formed with worm wheel teeth 27 meshing with a worm 29. The two worms 29 are carried by a shaft 31, the opposite ends of which are journalled in the casings 25. By this construction it will be observed that if the shaft 31 is rotated the lighter bars will be simultaneously raised or lowered.

For rotating the shaft 31 I secure to one end thereof a bevel gear 33 with which meshes the bevel pinion 35. The bevel pinion I provide with a journal 37 formed integrally with the bracket 39. For supporting the bracket I provide one end thereof with .a perforation 41 through which passes the end of the shaft 31, and. hold the bracket on the shaft by means of a collar 43 fixed to the shaft. For further supporting the beanng' 37 I provide it with an arm 45 (Fig. 2) whic is slidably secured to an arm 47 pivoted at 4:9 to a. bracket 51 carried by one of the lighter bars. As illustrated in Fig. 2 the arm 45 is provided with longitudinally disposed slots 53 through which pass bolts 55 secured to the arm 47. It will be noted by this construction that I haveprovided an extensible support which at one end is carried by one of the lighter bars and at its other end is carried by the shaft 31.

For driving the bevel pinion 35 I provide a pair of spaced friction disks57 which are carried by a spindle 59 having anintegral flange 61 bolted to the end of the shaft portion of the beater roll so that the friction disks rotate with the beater roll. Between the disks 57 I mount a friction .wheel63 of diameter less than the space between the disks, the friction wheel being carried by a short shaft 65 journalled in a movable hearing 66 carried by the bracket 51. The end portion of the shaft 65 is of square crosssection as is indicated diagrammatically at 67, which serves to spline it to the hub 69 of a universal joint. The universal joint comprises a leather or fabric disk 71 carried by a pair of arms 7 3 formed integrally with the hub 69. 'On the opposite side of the disk is a hub 7 5 having formed integrally therewith a pair of arms 77 which are secured to the disk 71 in quartering relation with the arms 7 3. The spindle of the bevel pinion 35 is connected to a second universal joint indicated at 79, which is identical with the universaljoint just described, and which is connected to the latter by means .of a shaft 81.

Referring particularly to Figs. 3 and 4 the journal 66 for the shaft 65 is provided with a base 83 in which is formed longitudinally disposed slots 85 through which pass bolts 87 tapped into the upperside of the racket 51, which construction permits the journal to slide relatively to the bracket and lighter bars. For normally holding the journal in an intermediate position so that the friction wheel 63 will contact neither disk 57 the journal is provided with a depending lug 89 which extends into alongitudinal groove 91 formed in the upper surface of the bracket. In the groove 91 at opposite sides of the lug 89 are compression springs 93 which bear on opposite sides of the lug and tend to hold the lug at the central portion of the length of the slot 91.

For moving the bearing 66 so as to cause the friction wheel 63 to contact either of the disks 5? at the will of the operator I provide an operating lever 95 which is pivotally carriedrby a pin 97 supported by a pair of upstanding ears 99 carried by the bracket 51. The lowermost portion of the lever is formed with gear teeth 101 which mesh with a rack 103 formed on the upper side of a bar 105 secured to the base of the journal 66 by a pin 107. By this construction the operator may manually swing the lever 95 which will slide in the journal 66, and upon the operator releasing his hand from the lever the springs 93 will automatically throw the reversible gearing afforded by the friction disks and friction wheel in a neutral position.

It will be observed from the above described construction that 1 have provided a heater in which the beater roll drives a reversible gearing connected by a flexible drive to the shaft 31 which operates the iechanism for raising and lowering the lighter bars.

0 I may provide any convenient or suitable means for indicating to the operator the elevation of the beater roll or lighter bars, and for this purpose have shown a pointer 109 attached to the upper end of one of the screws 19, said pointer cooperating with a bar 111 which in practice is provided with suitable graduations. Although I have described one specific embodiment of my invention for purposes of illustration it is to be understood that I am not limited thereby to its particular mechanical details, but that wide deviations may be made therefrom without departing from the spirit of my invention.

Claims: 7 a 1. A beater having in combination, a beater roll, swinging lighter bars having journals for supporting said roll, means for raising said lighter bars including a screw and a rotatable nut, said nut on its periphery having worm wheel teeth cooperating with a worm, a shaft for rotating said worm, a bevel gear for rotating said shaft, a bevel pinion for driving said bevel gear, a journal for said bevel pinion, an extensible sup- .port for said last named journal carried at one portion thereof by said shaft and at another portion thereof by said lighter bar, a pair of spaced friction disks driven by said beater roll, a friction wheel between said disks, a movable journal for said friction wheel, means normally holding said journal for said friction wheel in such position as to hold said friction wheel out of'contact with both of said friction disks, manually operated means for movingsaidjournal to cause said friction wheel to contact with one or the other of said friction disks, and means 7 including a universal driving connection for causing said friction bevel pinion.

2. A beater having in combination, a beater roll, a pair of lighter bars rotatably supporting said roll, a frame, said lighter bars each at one end being fulcrumed to said frame, adjustable means for securin the other end of each lighter bar to sai frame, mechanism for operating said adwheel to drive said 'justable means for causing raising andlowering said beaterroll, said mechanism includmg a reversible gearing driven by said roll,

a flexible transmission providing universal movement for transmitting the motion of said gearing to said adjustable means, and a support for said flexible transmission carried by one of said lighter bars.

3. An attachment for beaters having a beater roll with a shaft supported on lighter bars and a rotatable shaft for operating mechanism for raising and lowering said lighter bars, comprising a pair of disks with means for attaching them to the end of the shaft portion of said beater roll, a bracket having means for attaching it to a lighter bar, a friction wheel between said disks movably carried by said bracket, an extensible vsupport carried by said rotatable shaft and by said bracket, and transmission mechanism driven by said friction wheel and carried by said support'for driving said rotatable shaft.

4. A beater having in combination, a beater roll, mechanism for raising said roll, a friction disk driven by said roll, a friction wheel cooperating with said friction disk, means including a pair of oppositely acting springs for normally holding said friction wheel in predetermined position relatively to said friction'disk, manually operated means for moving said friction-wheel relatively to said friction disk, and means for transmitting the motion of said friction wheel to said mechanism for raising said roll.

5. A beater having in combination, abeater roll having a shaft, lighter bars on which said shaft is journalled, means for raising and lowering said lighter bars including an operating shaft, means including reversible gearing and a universal drive for opera tively connecting said shaft of said beater roll with said operating shaft, and a support for said universal drive carried at one end portion thereof by said operating shaft.

6. A beater having in combination, abeater roll having a shaft, lighter bars on which said shaft is journalled, means for raising and lowering said lighter bars including an operating shaft, means including reversible gearing and a universal drive for operatively connecting said shaft of said beater roll with said operating shaft, and a support for said universal drive carried by one of said lighter bars and said operating shaft.

7 A beater having in combination, a beater roll having a shaft, lighter bars on which said shaft is journalled, means for raising and lowering said lighter bars including an operating shaft, means including a universal drive and a reversible g'earin the latter comprising relatively shifta le friction wheels for operatively connecting said shaft of said beater roll with said operating shaft, and an extensible support for said universal drive carried by said operating shaft and one of said lighter bars.

In testlmony whereof, I have signed my name to this specification.

HARRY C. CLAFLIN. 

